Self-inking hand-stamp.



H. s. FCLGER & 0.1. REDFIELD. SELF INKING HAND STAMP.

ATION FILED JUNE13 191 1,134,950. I P ntedApna ms.

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H; s. FOLGE'R & c. REDFIELD.

SELF mkma HAND STAMP.

nmcmou mans'uu'us. 1913.

Patented Apr. 6, 1915.

2 SHEETS-SKEET 2.

- an s'rarns PATENT ora ion.

HARRY s. FOLGER AND CASPER L. BEDFIELD, on CHICAGO, ILLINoIs; SAID REDFIELD .AssIGNoR TO SAID FOLGER.

SELF-INKING HAND-STAMP.

Specificationof Letters Patent.

. Patented Apr. 6, 1915.

Application filed June 1 3, 1913. Serial No. 773,393.

To all whom it may concern Be it known that we, HARRY S. FOLGER and CASPER L. REDFIELD, citizens of the United States of America, and residents of Chicago, county of Cook, and State of 1111- nois, have invented certain new and useful Improvements in Self-lnking Hand- Stamps, of which the following is a specification.

Our invention relates to self inking hand stamps and has for its object the improvements in such stamps.

In the present instance we have illustrated our invention as a self inking attachment for commercial hand stamps of a kind which has not heretofore been used with self inking devices.

It the accompanying drawings Figure 1 is a rear elevation of a large sized hand band stamp with a self inking attachmentsecured thereto; Fig. 2 is a side elevation of the same; Fig. 3 is a section on line 33 of Fig. 1, the upper part being'broken away; and Fig. 4 is a similar section showing the stamp in printing position.

The stamp proper consists of a series of type bands 10 supported in a frame 11 which has a handle 12. The bands 10 are supported above, on hand wheels 13 which are mounted on a shaft 14. At the lower part of the stamp the bands run over a bridge connecting the lower free ends of the frame 11. One end of this bridge is shown at 15 in Fig. 4. r

The parts so far mentioned are simply parts of the ordinary adjustable hand band stamp well known in the trade, which does not need further description.

Through the lower part of the stamp is a shaft 16 which corresponds to and is parallel with shaft 14. The outer ends of the shafts 14 and 16 are guided in slots 17 and 1-8 in the side frames 19. Tie rods 20 secure the side frames 19 together below, while collars 21, links 22 and screws 23 secure the upper ends of the frames 19 so that said frames will remain parallel and permit the stamp to rise and fall in the frames.

Supported in the frames 19 is a shaft 24, and on each end of this shaft is pivoted a link 25. Pivoted at 26 on each frame 19 is a link 27 which is of the same length as link 25. Pivoted to the free ends of the links 25 and 27 is a pad or pad box 28 which is thus supported at each end by links. As

thus constructed the pad and its support ing links constitute a parallel motion,

in that the pad face always lies in a horizontal plane though it rises and falls in its movement about the pivots 24 and 26. It is not at all necessary to the operation that the links 25 and 27 be of the same length, the only result of making one shorter than the other being to throw the pad out of level when not in contact with the type faces on the bands 10. 'The length of the links 25' and 27 is such that when they are thrown forward as shown in Fig. 3 the pad will be directly beneath the center of the stamp as vertically guided in the frames 19, while, when the links are thrown backward as shown in Fig. 4, the pad is moved to the rear far enough'to clear the stamp as it moves downward to printing position.

Pivoted on the shaft 16 are links 29 which have their free ends pivoted to intermediate points on the links 27. Springs 30 on the shaft 24 connect to the ends of the shaft 16 and act to raise the stamp to its upper position. The upper position is determined by contact between the pad28 and the type bands 10. Y

Hand pressure applied to the handle-12 moves the stamp in its frame 19, which from the position shown in Fig. 3; As links 29 are connected to intermediate points on the links 27 it will be evident that the free ends of the links 27 move downward more rapidly than the shaft 16. As the shaft 16 is fiXedto-the stamp and the ends of the links 27 are fixedto the pad, the first effect of moving the stamp downward from its upper position is to move the pad 28 downward still more rapidly and thus cause the pad to separate from the type faces on the bands 10. As this downward movement of the pad is on the arc of a circle, the pad moves rearwardly to clear thetype bands and later moves upwardly while the stamp is finishing its downward stroke. Preferably the connections are such that the shaft 16 at its lowest position is-slightly below the to pass the center on the level with the pivotal connection between the links 27 and 29 is to cause the pad 28 to finish its rearward movement and reverse itself before the type strike the paper. The advantage of having the shaft 16 pass the center is that the rapid movement of the pad is only at the time when it is clearing the stamp, and the total length of movement of the pad is reduced to a minimum. When the hand pressure is released, the springs 30 raise the stamp until it locks itself in its upper position by contact between the pad and the type face. This self locking position will be evident from inspection of Fig. 3 in which it will be seen that any movement of the stamp either upward or downward causes a more rapid movement in the same direction of the pad. As the pad is against the face of the type any further raising of the stamp could come only as the result of forcing the type into the pad.

The springs 30 are connected at their inner ends to a collar 31 on the shaft 24. One end of the shaft 24 is squared and has thereon an arm 32 which hooks over the edge of the frame 19 and maintains the proper tension on said springs. W hen it is desired to increase the tension of the springs 30 a wrench is applied to the collar 31 to move the shaft, and consequently the arm 32, in a contra clockwise direction as shown in Fig. 3. When this is done the arm 32 may be removed from the squared end of the shaft 24: and be replaced in a different relationship thereto.

' One of the links 22 has in it notches 33 and 34, and secured to the adjacent frame 19 is a dog 35 adapted to engage these notches. When the stamp is moved downward a short distance from its uppermost position and the dog 35 is inserted in the notch 33, the pad and the type face are held slightly removed from each other. lhis removal of the pad from the type is to prevent the pad from being marked at spots by long continued contact with the type, and is just enough to accomplish this result. By making this removal very slight, no material amount of dust settles on the pad when the stamp is not in use. The upper notch 34- is so located that when engaged by the dog 35 the stamp will be held close to the printing position and the pad at its position in the rear of the stamp. In this position the pad is horizontal with its face eX- posed in a convenient position for renewing the supply of ink. The convenience with which the pad may be inked is one of the advantages of this construction.

It will be observed from the foregoing descriptionthat the present stamp is distinguished from the ordinary tumbler by the fact that the stamp always stands upright and moves directly to and from the 1,1se,95o

surface to be printed upon. In this construction the movement is much shorter than in the tumbler and is not at all dependent upon the vertical height of the stamp. lhe

construction used is not only applicable to a stamp designed completely for the purpose, but the self inking apparatus may be applied as an attachment to a commercial stamp without modifying the present construction. In the present instance the only things necessary are to lengthen the shaft 1 slipping a new one in the place of the one ordinarily used, and to insert a shaft 16 in the space otherwise unused.

The pad holding box 28 may be pivoted directly to the links 25 and 27 as described but we prefer to pivot the links to a box holding bridge 36 and then slip the box into the bridge where it may be held in place by any convenient means. A pad boX held right side up as in this case is superior to the inverted box of the tumbler stamp in that if too much ink is placed in the box it will not run out but will lie in the lOOX under the pad until absorbed.

What we claim is 1. A hand stamp of the type ordinarily inked by hand and having a frame of its own, a supplementary or outer frame in which the stamp frame is mounted, upper and lower shafts extending through the stamp frame and having their ends guided in the supplementary frame, band wheels mounted upon the upper shaft, an ink pad pivoted to the supplementary frame, and connections from the lower shaft to the pad support.

2. The combination with a hand stamp having type bands, band wheels and a shaft on which the wieels are supported and rotated for moving the bands, of a second shaft inserted in the stamp, a frame having guides engaging the ends of the shafts, a spring supporting the stamp in elevated position in the frame, an ink pad engaging the printing face of the stamp when in elevated position, and automatically operating means for removingthe pad when the stamp is depressed.

3. The combination with a hand stamp having type bands, type wheels and a shaft for said wheels, of a second shaft inserted in the stamp, a frame having guides for the ends of said shafts, a spring supporting the stamp in an elevated position in said frame, an ink pad engaging the stamp when in elevated position, and connections from the second shaft to the pad for removing it when the stamp is depressed. 7

4c. The combination with a hand stamp having type bands, band wheels and a shaft on which the wheels are supported and rotated for moving the bands, of a second shaft inserted in the stamp, a frame engaging the ends of said shafts to guide the stamp in printing movement, an ink pad supported by the frame and normally engaging the printing face of the stamp, a spring supporting the stamp in the frame, and automatically operating means for re moving the pad from the stamp when the stamp is depressed to cause it to print.

5. The combination with a hand stamp having a frame, type bands and a handle by which it is normally used as a hand inker, of an outer frame, a shaft forming part of the hand stamp and having its end projecting into guiding slots in the outer frame, a second shaft extending through the stamp and having its ends projecting into other guiding slots in the outer frame, an ink pad pivoted to the outer frame, and a connection from the second shaft to the ink pad.

6. The combination with a hand stamp having type bands, band wheels and a shaft on which the wheels are supported and rotated for moving the bands, and a frame within which said parts are contained, of an outer frame providing guides for the ends of the wheel supporting shaft, an ink pad pivoted to the outer frame and arranged to engage the printing face of the stamp when said stamp is in an elevated position, a transverse shaft supported in the outer frame adjacent to the inner frame, and a stamp elevating spring mounted upon said transverse shaft.

7. The combination with a hand stamp having a frame, a shaft, and band wheels mounted upon the shaft, of an outer frame consisting of side plates providing slots for the reception of the ends of said shaft, a second shaft supported in said side plates and located to the rear of the stamp frame, a pad carrying frame pivotally supported upon said second shaft, a stamp elevating spring also supported upon said second shaft, and connections from the stamp frame to the pad carrying frame.

8. A frame consisting of two metal plates connected together by tie rods, a stamp located between the plates and guided by the of the stamp, tie rods connecting the plates together, an ink pad pivoted to the outer frame, links pivoted to the stamp and connected to the pad, and a spring mounted upon the pivotal support for the pad and operating through the links to elevate the stamp.

10. The combination with a hand stamp having a frame of its own, of an outer frame consisting of plates providing verticle guiding slots, upper and lower projections on opposite sides of'the stamp frame, said projections being arranged to enter said slots to guide the reciprocations of the stamp in the outer frame, a pad pivoted to the outer frame, and links connecting the pad to two of said projections.

11. The combination with a hand stamp having band wheels and a shaft on which said wheels are supported, of a frame consisting of plates located on opposite sides of said stamp, connections exterior to the stamp for securing the lower parts of opposite plates together, and means by which the wheel supporting shaft acts as a tie rod connecting the upper parts of opposite plates together.

Signed at Chicago, Illinois, this 10th day of June 1903.

HARRY S. FOLGER. CASPER L. REDFIELD.

Witnessesz' WALTER H. REDFIELD, O. M. WERMICK.

Gopies of this patent may be obtained for five cents each, by addressing the ommissioner of Patents,

Washington, D. 0. 

